Gebru was fired for unprofessional conduct and disturbing the work place. She tried to sneak a Google authored paper through internal peer review, by submitting it on the day of the deadline, and having the paper approved without incorporating any feedback of the internal review. Then she wrote an angry unhinged email to her colleagues and subordinates, where she said that Google was marginalizing Black women for speaking out about diversity and that KPI diversity metrics do no matter, they can be ignored. Then she threatened resignation, if Jeff Dean would not de-anonymize all the internal reviewers. Since that is a demand that no scientific chair can possibly in good conscience satisfy, her bluff was called and she was "resignated". Then, of course, she asked on Twitter for a good employee lawyer, said that Jeff Dean was white privilege, and that Google fired her for advocating for diversity, essentially dissing all her Black colleagues at Google advocating for diversity without any problems relating to their skin color.
Gebru is an absolutely toxic person, who can't keep her politics and racial justice activism outside of her profession or academic work (her work is cited so much, because she actively mails other scientists when they don't cite her work, threatening to call them marginalizing and ignorers of Black women in science -- pity cites).
She is bubbled in a network which supports her with tags suchs as "BelieveBlackWomen" when she publicly smears Google for being racists. No rationality, but stirred up angry feelings. Trust should not be assigned due to skin color or gender. Stop that racism and sexism, it has no place in business or academia.